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Proceedings Paper

Improved magneto-inductive waveguide as wireless sensor net for structural health monitoring
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Paper Abstract

This paper summarizes ongoing work on applying passive magneto-inductive (MI) waveguides as wireless sensor arrays to monitor corrosion in infrastructure systems. The passive uniformly-spaced sensor array provides a low-cost and quick method to detect the onset of corrosion in concrete structures using a noninvasive approach. The embedded sensors communicate with neighboring sensors through inductive coupling. The corrosion information is interpreted based on both frequency and time domain characteristics. Bandpass characteristics in the frequency domain and received reflected time domain waves are investigated to locate the defects along the wireless sensor array. Using the relationship between the relative positions of defects and MI waveguide performances, a new combined technique to determine location of defects has been developed and proven to provide both improved sensitivity and defect location capability.

Paper Details

Date Published: 5 April 2012
PDF: 8 pages
Proc. SPIE 8347, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012, 83472H (5 April 2012); doi: 10.1117/12.915227
Show Author Affiliations
Ye Chen, The Univ. of Texas at Austin (United States)
Praveen Pasupathy, The Univ. of Texas at Austin (United States)
Tanuj Trivedi, The Univ. of Texas at Austin (United States)
Dean P. Neikirk, The Univ. of Texas at Austin (United States)
Sharon L. Wood, The Univ. of Texas at Austin (United States)


Published in SPIE Proceedings Vol. 8347:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2012
Andrew L. Gyekenyesi, Editor(s)

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